How to Matching matrix size (add or take away a value)

Question

Drew Eager 2021-7-31

0
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https://ww2.mathworks.cn/matlabcentral/answers/889587-how-to-matching-matrix-size-add-or-take-away-a-value

回答： KSSV 2021-7-31

Hi everyone,

I want to take the results from vx and then apply them to the find ax, but the matrix are different sizes so I am reciving an error. Is the a away to rectify this so i can use the reulting vx matric for the ax eqaution? I cannot figure out how to match the size.

Thanks

Here is the code I am working with.

% x values of particle 1
x = [2.1547 2.1104 2.0498 1.9743 1.8852 1.7843];
% t values of particle 1
t = [0.1346 0.2015 0.2682 0.3345 0.4006 0.4665];
% difference
dx = diff(x);
dt = diff(t);
% vx - velocity in x direction
vx = dx./dt;
% ax - acceleration in x direction
ax = vx./dt;